Navigation Links
NREL's multi-junction solar cells teach scientists how to turn plants into powerhouses
Date:5/12/2011

and Senior Scientist Mark Hanna recently demonstrated how a multi-junction, tandem solar cell for water splitting to produce hydrogen can provide higher efficiency more than 40 percent -- by using multiple semiconductors and/or special photoactive organic molecules with different band gaps arranged in a tandem structure.

The coupling of different materials with different gaps means photons can be absorbed and converted to energy over a wider range of the solar spectrum.

"In photovoltaics, we know that to increase power conversion efficiency you have to have different band gaps (i.e., colors) in a tandem arrangement so they can more efficiently use different regions of the solar spectrum," Nozik said. "If you had the same gap, they would compete with each other and both would absorb the same photon energies and not enhance the solar conversion efficiency."

Photosynthesis does use two gaps based on chlorophyll molecules to provide enough energy to drive the photosynthesis reaction. But the two gaps have the same energy value, which means they don't help each other to produce energy over a wider stretch of the spectrum of solar light and enhance conversion efficiency.

Furthermore, most plants do use the full intensity of sunlight but divert some of it to protect the plant from damage. Whereas photovoltaics use the second material to gain that photoconversion edge, plants do not, Nozik noted.

One of NREL's roles at the DOE workshop was to help make it clear how the efficiency of photosynthesis could be improved by re-engineering the structure of plants through modern synthetic biology and genetic manipulation based on the principles of high efficiency photovoltaic cells, Nozik said. In synthetic biology plants can be built from scratch, starting with amino acid building blocks, allowing the formation of optimum biological band gaps.

The newly engineered plants would be darker, incorporating some biological pigmen
'/>"/>

Contact: Bill Scanlon
william.scanlon@nrel.gov
303-275-4051
DOE/National Renewable Energy Laboratory
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Trustee makes donation to start new solar energy research center at Rensselaer
2. Solar-powered sea-slugs live like plants, prof says
3. A world-first in solar technology unveiled at Concordia University
4. $300,000 donation from BP includes solar vehicle for UH
5. Iowa Power Fund advances researcher’s long quest for efficient solar power
6. Ancient diatoms lead to new technology for solar energy
7. Tufts students host Earth Day with groundbreaking ceremony for solar house
8. Ben-Gurion University research and technology used in new solar energy farm
9. DOE funds bio-inspired solar fuel center at Arizona State
10. Accolade for solar-hydrogen project
11. Flexible solar strips light up campus bus shelter
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:12/10/2014)... RALEIGH, N.C. , Dec. 9, 2014  Valencell, ... announced it is seeing a staggering demand from its ... demand, the Company revealed, is not solely coming from ... industries as well. "A wearable is only ... a result, accuracy is the ultimate driver in long-term ...
(Date:12/10/2014)... December 9, 2014   ... Platform   Jifflenow, ... scheduling solutions for business-to-business (B2B) events, today announced ... in mobile near-field communication (NFC), Bluetooth low energy ... (Logo: http://photos.prnewswire.com/prnh/20140612/691055) , Jifflenow will integrate ...
(Date:12/3/2014)... IRVINE, Calif. , Dec. 2, 2014 /PRNewswire/ ... of globally deployed, innovative test solutions for military, ... the newest version of its successful TS-900 ... the performance and features of high-end systems to ... with outstanding value compared to traditional ATE. ...
Breaking Biology News(10 mins):Wearable Technology Products Demand Highly Accurate Biometric Technology 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 2Jifflenow And ITN International Bring Cutting-Edge Badge Scanning Technology To B2B Events 3Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 2Marvin Test Solutions Brings New Capabilities to PXI-Based Semiconductor Test with TS-960 3
... jaw of a 120 million year old marine reptile suggest that ... The healed bite wounds were probably made by a member of ... behaviour of extinct sea creatures from the time of dinosaurs. The ... Polonica . Found in the remote desert near the town ...
... when cosmetics, shampoos, skin creams, and other personal care ... to plant-derived extracts and other natural ingredients government ... the silicone-based ingredients long used in these products. That,s ... of Chemical & Engineering News (C&EN), ACS, weekly newsmagazine. ...
... providing the inspiration for University of Adelaide computer science ... increase wind farm productivity. Senior Lecturer Dr Frank ... a "selection of the fittest" step-by-step approach called "evolutionary ... account wake effects, the minimum amount of land needed, ...
Cached Biology News:Battle scars found on an ancient sea monster 2Evolutionary lessons for wind farm efficiency 2
(Date:12/19/2014)... BioPlus Specialty Pharmacy ... has an expanded team of Regional Pharmaceutical Care ... prescriber offices in their regions, with specific areas ... a variety of Regional Pharmaceutical Care Liaisons specializing ... hepatitis C help prescribers understand all the new ...
(Date:12/19/2014)... Reports from CDC show ... from one or more chronic health conditions - including ... address some of these diseases, but may not eliminate ... face. While implanted nerve stimulation devices today offer relief, ... which can induce side effects. , To eliminate ...
(Date:12/19/2014)... 18, 2014 With only 2 weeks ... special on Sartorius Biohit products . The product specials ... Picus Electronic Pipette Trade-in Program, and free pipette tips. ... officers around the world. They are ideal for lab ... include:, ,     Full volume range of 0.1 ...
(Date:12/19/2014)... NEW YORK , Dec. 18, 2014 ... novel therapies for the treatment of chronic pain, announced ... held today. "This was a transformational year ... a promising future for our company," said Sergio ... past year, we have executed on key financial, human ...
Breaking Biology Technology:BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 2BioPlus Specialty Pharmacy Expands ‘Regional Pharmaceutical Care Liaison’ Team 3Draper Wins GSK Funding for Smaller, Smarter Implantable Devices 2Major Pipette Distributor Pipette.com Announces Sartorius Year End Specials 2Relmada Therapeutics Announces Results of Annual Shareholders Meeting 2
... Switzerland, December 19 An exclusive license,for the ... for,lung infections in Cystic Fibrosis patients was signed ... Japan transferred relevant,rights to Axentis Pharma AG of ... to the licensed technology and a phase II ...
... . , By means of X-ray interferometers, lengths ... resolution of less than one nm. The low translation velocity ... difficult, could now be increased by a factor of 100 ... , X-ray interferometers can measure lengths in the mm range ...
... DuPont today congratulated,growers planting Pioneer(R) brand sorghum hybrids ... in the 2007 National Sorghum Producers, (NSP),Yield and ... Pioneer sorghum,hybrid 84G62., Farmers growing Pioneer sorghum ... segments. First-, second- and third-place national,honors were awarded ...
Cached Biology Technology:Cystic Fibrosis: License Agreement Boosts Development of Therapy Against Lung Infections 2Cystic Fibrosis: License Agreement Boosts Development of Therapy Against Lung Infections 3Faster X-ray interferometers due to single-photon interference 2DuPont Congratulates Growers Planting Pioneer(R) Brand Sorghum Hybrids in Winning Majority of National Categories in Yield Contest 2
...
MOUSE ANTI S. NEWPORT SALMONELLA HADAR...
MAb to Hu-IFN-Gamma RC2 (CD118), NON-Neutralizing, Clone MMHGR-2 Binds to but does not neutralize human interferon gamma receptor...
Secure-Seal™ hybridization chamber gasket, eight chambers, 9 mm diameter, 0.8 mm deep *set of 20*...
Biology Products: